Frank x



(No Model.)

P. X. BLACK. PAPER MACHINE DRIER.

Patented-Aug; v, 1894.-

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UNITED STATES P TENT OFFICE.

p, FRANK X. BLACK,.OF HAMILTON, OHIO, Assreuon TO THE BLACK &

OLAWSON COMPANY, OF SAME PLAOE.

PAPER-MACHINE DRIER.

SPECIFICATION forming part of Letters Patent No. 523,968, dated August'7, 1894.

- Application filed May 21,1892. Serial No. 43818 0- (No model. I

This invention pertains to improvements in the construction of thedrying-cylinders employed on paper machines, &c., and the improvementsrelate to means for enhancing the readiness with which the cylinders maybe made steam tight: for lessening the danger of the joint-bolts usuallyemployed in securing the heads to the shell of the cylinder: and forenhancing the readiness with which modifications may be' made in thedrier in case a new neck or journal is required.

My improvements will be readily understood from the followingdescription taken in connection with the accompanying drawing which is avertical longitudinal section of a drying cylinder illustrating myinvention.

Referring to the drawing: A, indicates the cylindrical shell of thedrier: B, the two heads of the drier cast integrally with the shell: 0,one of the necks or journals of the drier, integrally cast with one ofthe heads B: D, an annular reinforcement at the juncture of neck orjournal 0 with the drier head with which it is cast, this reinforcementbeing concentric with the journal and integrally cast with the journaland head: E, a central open: ing in that head of the drier opposite toone to which the journal 0 is cast: F, an annular reinforcementformingthe margin of the opening E: G, the journal of that end of thedrier which is provided with the opening E: H, a flange upon the innerend of this journal seating against the reinforcement F: J, bolts,exemplifying means for securing the flange H firmly to the reinforcementF: and K, the usual hand-hole in one of the drier heads.

The opening E gives access, before the j ournal G is applied, to theinterior of the drier and permits of its inspection and of theconvenient adjustment of the scoop, siphon pipe .or other interiordevices and it also permits of proper support for the core in castingthe drier and it also permits the insertion of boring tools in case theshell ofthe drier is to be bored as is sometimes the case. There is butone joint to be made steam tight, namely, that where the flange H joinsthe reinforcement F and the area of this joint is comparatively small.The joint bolts J, if employed in attaching the flange to thereinforcement, are so far down toward the center of the drier that theyare not liable to catch the sleeves of attendants as they start the webof paper over the drier.

Should any change be desired in the form of the drier journal G a newjournal may be readily applied. If a change should be desired in thejournal 0, or should that journal become broken, changes or repairs canreadily be made by fitting a new journal onto the reinforcement D in themanner as illustrated at the journal G.

I claim as my invention 1. In a drying cylinder, the combination,substantially as set forth, of a cylindrical shell having integrallycast heads and provided at one head with an integrally cast neck orjournal and provided at the other head with a central opening reinforcedat its margin, and a neck or journal provided with a flange and securedat said opening to such reinforcement.

2. In a drying cylinder, the combination, substantially as set forth, ofa cylindrical shell having both heads cast integrally with it andprovided at one head with a neck or journal integrally cast with suchhead and having a concentric reinforcement integrally formed at thejuncture of the neck with the head, and provided at the other head witha central opening margined by areinforcement, and a neck or journalprovided with a flange and secured at said opening to the reinforcementforming the margin thereof.

FRANK X. BLACK. Witnesses:

J. W. SEE, JAs. FITTON.

